i use FL studio too
but you gotta get away from the standard FL studio sound. For example, we all know that's dance snare 3 (and the 'whats this knob do' vocal... it's pretty much the first no-no of FL usage). and especially for dubstep, its so important to have original samples to make the song stand by itself as a demonstration of superior mastering and sound selection. Because unfortunately it's not difficult to come up with a dubstep melody... all your instruments are doing the right kinda stuff, its just a matter of making sure they sound exactly how they should.
That little riff at 2:12 was a pleasant surprise. had there been some reenforcement with a heavy bass and some pads behind it, i'd be bobbing my head uncontrollably... sadly it's not quite there yet.